View Single Post
Old 05-25-16, 08:45 AM   #27
jjackstone
Helper EcoRenovator
 
Join Date: Mar 2009
Location: Sacramento,Ca
Posts: 88
Thanks: 5
Thanked 32 Times in 23 Posts
Default

Sounds like either one cell went bad and brought all the other ones down or the charger went bad and did the job. It is possible to bring the cells back one at a time until you find the bad one but it may not be worth your time. Years ago I was using the 36V DeWalt packs for my ebike and shortly after I bought my then $100/pack it quit working. After disassembly I found one cell below one volt.I just connected a couple D cells in series for 3.2V and then parallelled them with the lithium cell. That brought the single cell voltage up to above 2.6 or 2.8V-- what ever the charger minimum voltage was and then allowed the factory charger to do its job and charge the complete pack. I'm still using that pack in the drill it was made for. Don't know if it would work for you since all your cells seem dead and it might depend on how long they have been at that low voltage but it could be worth a try.

JJ
jjackstone is offline   Reply With Quote
The Following User Says Thank You to jjackstone For This Useful Post:
stevehull (05-25-16)